Tenta prever onde a bola vai bater na parede em salas públicas de Haxball.
Stan na
// ==UserScript==
// @name Haxball Ball Trajectory Predictor (Beta)
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Tenta prever onde a bola vai bater na parede em salas públicas de Haxball.
// @author Você
// @match https://www.haxball.com/play*
// @grant none
// ==/UserScript==
(function () {
'use strict';
const canvas = document.querySelector("canvas");
if (!canvas) return;
let lastPos = null;
let lastTime = performance.now();
function drawPrediction(ctx, ballPos, ballSpeed) {
let predictedX = ballPos.x;
let predictedY = ballPos.y;
let vx = ballSpeed.x;
let vy = ballSpeed.y;
let steps = 300;
ctx.strokeStyle = "yellow";
ctx.beginPath();
ctx.moveTo(predictedX, predictedY);
for (let i = 0; i < steps; i++) {
predictedX += vx;
predictedY += vy;
if (predictedX <= 0 || predictedX >= canvas.width) vx *= -1;
if (predictedY <= 0 || predictedY >= canvas.height) vy *= -1;
ctx.lineTo(predictedX, predictedY);
}
ctx.stroke();
}
function trackBall() {
const ctx = canvas.getContext("2d");
const imgData = ctx.getImageData(0, 0, canvas.width, canvas.height);
const data = imgData.data;
let found = false;
let centerX = 0, centerY = 0, count = 0;
for (let y = 0; y < canvas.height; y += 2) {
for (let x = 0; x < canvas.width; x += 2) {
const idx = (y * canvas.width + x) * 4;
const r = data[idx], g = data[idx + 1], b = data[idx + 2];
// Detecta a bola (geralmente branca com tom amarelado)
if (r > 200 && g > 200 && b < 150) {
centerX += x;
centerY += y;
count++;
}
}
}
if (count > 0) {
centerX = centerX / count;
centerY = centerY / count;
const now = performance.now();
const dt = (now - lastTime) / 1000;
if (lastPos) {
const vx = (centerX - lastPos.x) / dt;
const vy = (centerY - lastPos.y) / dt;
// Redesenha a previsão
drawPrediction(ctx, { x: centerX, y: centerY }, { x: vx, y: vy });
}
lastPos = { x: centerX, y: centerY };
lastTime = now;
}
requestAnimationFrame(trackBall);
}
setTimeout(() => {
console.log("[Previsão de Trajetória] Iniciando...");
trackBall();
}, 3000);
})();